Mortgage FAQ: How Much Can I Borrow for a Mortgage in the UK in 2026?
Updated: March 2026
This week’s mortgage FAQ answers one of the most common questions from buyers:
“How much can I actually borrow for a mortgage?”
Whether you’re a first-time buyer or moving home, understanding your borrowing potential is key before you start your property search.
Quick answer
Most UK lenders typically offer around 4 to 4.5 times your household income, although some lenders may offer up to 5–6× income in certain circumstances.
However, the exact amount you can borrow depends on your deposit, income type, outgoings, and lender criteria.
In simple terms, mortgage borrowing in the UK is primarily based on a multiple of your income combined with a detailed affordability assessment.
How mortgage borrowing is calculated
Mortgage lenders don’t just look at your salary, they assess your overall affordability.
This includes:
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Your income (salary, bonus, self-employed income)
-
Existing financial commitments
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Credit history
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Household spending
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Number of dependants
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Deposit size
Because of this, two people earning the same salary can sometimes receive very different borrowing amounts.
Income multiples explained
A simple way to estimate borrowing is using income multiples.
Typical ranges:
| Income | 4x | 4.5x | 5x | 6x | |
|---|---|---|---|---|---|
| £40,000 | £160,000 | £180,000 | £200,000 | £240,000 | |
| £60,000 | £240,000 | £270,000 | £300,000 | £360,000 | |
| £80,000 | £320,000 | £360,000 | £400,000 | £480,000 |
Higher multiples are usually:
-
criteria-driven
-
more common for professionals
-
dependent on strong affordability
Why your deposit matters
Your deposit plays a major role in how much you can borrow.
A larger deposit can:
-
increase lender choice
-
improve interest rates
-
make affordability checks easier
For example:
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5% deposit → fewer lenders, stricter affordability
-
10–20% deposit → more options and better rates
Is it possible to borrow more than 4.5× income?
In some cases, borrowers may be able to access higher income multiples of 5–6× income, depending on the lender and their circumstances.
This is more common for:
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Higher earners
-
Professionals (e.g. finance, law, medical)
-
Applicants with strong credit profiles
-
Borrowers with low existing financial commitments
However, higher multiples are always subject to affordability checks, and not all lenders offer them.
Real example
Example borrower:
Income: £50,000
Deposit: £25,000
Typical borrowing:
-
Standard lender: ~£225,000
-
Higher multiple lender: up to ~£300,000
The difference comes down to lender criteria and affordability assessment.
If you’re unsure how lenders would assess your income, we can usually give you a clear answer quickly based on real lender criteria.
Why lender choice matters
One of the biggest misconceptions is that all lenders offer similar borrowing amounts.
In reality:
-
each lender uses different affordability models
-
income can be assessed differently
-
bonus/variable income is treated differently
This means choosing the right lender can significantly impact how much you can borrow.
Oportfolio insight
Across London and the South East, we regularly see borrowers surprised by how much borrowing can vary between lenders.
In many cases, the key factor isn’t income, it’s matching the right lender to the borrower’s profile.
Not sure what you could borrow?
If you want a clear answer based on your situation, we can usually tell you quickly using real lender criteria.
If you’re planning to buy or remortgage, book a quick affordability review with Oportfolio Mortgages and we’ll show you what’s realistic.
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